Demo weapon loading problem

[Erace]

After typing in the console code to view demo, it starts to load the map and suddenly a screen pops up saying sumting like
"couldn't find altWeapon kar98k_sniper_4x_zoom for kar98k sniper"

[Koekie]

I think that's a mod, I'm not sure though...
should wait till some1 else replies

EDIT: Oh and btw, which demo are you talking about?

[woCooM]

if you get the following info..

WHO made the demo:
What is the demo name:

then we can tell you which mod you need

[Erace]

the demo is Carentan16
and i think it's made by Monkey